<template>
  <div>
    <!-- 面包屑导航区 -->
    <el-breadcrumb separator-class="el-icon-arrow-right">
      <el-breadcrumb-item :to="{ path: '/home' }">首页</el-breadcrumb-item>
      <el-breadcrumb-item>商品管理</el-breadcrumb-item>
      <el-breadcrumb-item>添加商品</el-breadcrumb-item>
    </el-breadcrumb>
    <!-- 卡片视图 -->
    <el-card>
      <!-- 提示区 -->
      <el-alert
        title="添加商品信息"
        type="info"
        center
        show-icon
        :closable="false"
      >
      </el-alert>
      <!-- 步骤条区 -->
      <el-steps
        :space="200"
        :active="Number(activeIndex)"
        finish-status="success"
        align-center
      >
        <el-step title="基本信息"></el-step>
        <el-step title="商品参数"></el-step>
        <el-step title="商品属性"></el-step>
        <el-step title="商品图片"></el-step>
        <el-step title="商品内容"></el-step>
        <el-step title="完成"></el-step>
      </el-steps>
      <el-form
        :model="addForm"
        :rules="addFormRules"
        ref="addFormRef"
        label-width="100px"
        label-position="top"
      >
        <el-tabs
          tab-position="left"
          v-model="activeIndex"
          :before-leave="beforeTabLeave"
          @tab-click="tabClicked"
        >
          <el-tab-pane label="基本信息" name="0">
            <el-form-item label="商品名称" prop="goods_name">
              <el-input v-model="addForm.goods_name"></el-input>
            </el-form-item>
            <el-form-item label="商品价格" prop="goods_price">
              <el-input v-model="addForm.goods_price" type="number"></el-input>
            </el-form-item>
            <el-form-item label="商品重量" prop="goods_weight">
              <el-input v-model="addForm.goods_weight" type="number"></el-input>
            </el-form-item>
            <el-form-item label="商品数量" prop="goods_number">
              <el-input v-model="addForm.goods_number" type="number"></el-input>
            </el-form-item>
            <el-form-item label="商品分类" prop="goods_cat">
              <el-cascader
                v-model="addForm.goods_cat"
                :options="cateList"
                :props="cateProps"
                @change="handleChange"
                clearable
              ></el-cascader>
            </el-form-item>
          </el-tab-pane>
          <el-tab-pane label="商品参数" name="1">
            <el-form-item
              :label="v.attr_name"
              v-for="v of manyTabData"
              :key="v.attr_id"
            >
              <el-checkbox-group v-model="v.attr_vals">
                <el-checkbox
                  :label="v"
                  v-for="v of v.attr_vals"
                  :key="v.attr_vals"
                  border
                ></el-checkbox>
              </el-checkbox-group>
            </el-form-item>
          </el-tab-pane>
          <el-tab-pane label="商品属性" name="2">
            <el-form-item
              :label="v.attr_name"
              v-for="v of onlyTabData"
              :key="v.attr_id"
            >
              <el-input v-model="v.attr_vals"></el-input>
            </el-form-item>
          </el-tab-pane>
          <el-tab-pane label="商品图片" name="3">
            <el-form-item>
              <el-upload
                :action="uploadURL"
                :on-preview="handlePreview"
                :on-remove="handleRemove"
                list-type="picture"
                :headers="headerObj"
                :on-success="handleSuccess"
              >
                <el-button size="small" type="primary">点击上传</el-button>
              </el-upload>
            </el-form-item>
          </el-tab-pane>
          <el-tab-pane label="商品内容" name="4">
            <quill-editor v-model="addForm.goods_introduce"></quill-editor>
            <el-button type="primary" style="marginTop:15px" @click="add"
              >添加商品</el-button
            >
          </el-tab-pane>
        </el-tabs></el-form
      >
    </el-card>
    <!-- 图片预览对话框 -->
    <el-dialog title="图片预览" :visible.sync="previewVisible" width="50%">
      <el-image class="previewImg" :src="previewPath"> </el-image>
    </el-dialog>
  </div>
</template>

<script>
import message from '../../utils/message'
import _ from 'lodash'
export default {
  name: 'Add',
  data() {
    return {
      activeIndex: '0',
      addForm: {
        goods_name: '',
        goods_cat: [],
        goods_price: 0,
        goods_number: 0,
        goods_weight: 0,
        goods_introduce: '',
        pics: [],
        attrs: []
      },
      addFormRules: {
        goods_name: [
          { required: true, message: '请输入商品名称', trigger: 'blur' }
        ],
        goods_price: [
          { required: true, message: '请输入商品价格', trigger: 'blur' }
        ],
        goods_weight: [
          { required: true, message: '请输入商品重量', trigger: 'blur' }
        ],
        goods_number: [
          { required: true, message: '请输入商品数量', trigger: 'blur' }
        ],
        goods_cat: [
          { required: true, message: '请选择商品分类', trigger: 'blur' }
        ]
      },
      cateList: [],
      cateProps: {
        expandTrigger: 'hover',
        label: 'cat_name',
        value: 'cat_id',
        children: 'children'
      },
      manyTabData: [],
      onlyTabData: [],
      uploadURL: 'http://127.0.0.1:8888/api/private/v1/upload',
      headerObj: {
        Authorization: sessionStorage.getItem('token')
      },
      previewPath: '',
      previewVisible: false
    }
  },
  methods: {
    async getCateList() {
      let res = await this.$http.get(`categories`)
      if (res.meta.status === 200) {
        this.cateList = res.data
        message('success', '获取分类商品分类成功!')
      } else {
        message('error', '获取分类商品分类失败!')
        return false
      }
    },
    handleChange() {
      if (this.addForm.goods_cat.length !== 3) {
        this.addForm.goods_cat = []
        return false
      }
    },
    beforeTabLeave(activeName, oldActiveName) {
      if (oldActiveName === '0' && this.addForm.goods_cat.length !== 3) {
        message('error', '请先选择商品分类')
        return false
      }
    },
    async getCateParams(sel) {
      let res = await this.$http.get(`categories/${this.cateId}/attributes`, {
        params: {
          sel
        }
      })
      if (res.meta.status === 200) {
        if (sel === 'many') {
          res.data.forEach(v => {
            v.attr_vals.length === 0
              ? []
              : (v.attr_vals = v.attr_vals.split(' '))
          })
          this.manyTabData = res.data
        } else if (sel === 'only') {
          this.onlyTabData = res.data
        } else {
          return false
        }
        message('success', '获取动态参数列表成功!')
      } else {
        message('error', '获取动态参数列表失败!')
        return false
      }
    },
    tabClicked() {
      if (this.activeIndex === '1') {
        this.getCateParams('many')
      } else if (this.activeIndex === '2') {
        this.getCateParams('only')
      }
    },
    handlePreview(file) {
      console.log(file)
      this.previewPath = file.response.data.url
      this.previewVisible = true
    },
    handleRemove(file) {
      let picPath = file.response.data.tmp_path
      this.addForm.pics.forEach((v, i) => {
        if (v.pic === picPath) {
          this.addForm.pics.splice(i, 1)
        } else {
          return false
        }
      })
    },
    handleSuccess(res) {
      let picInfo = { pic: res.data.tmp_path }
      this.addForm.pics.push(picInfo)
    },
    add() {
      this.$refs.addFormRef.validate(async valid => {
        if (valid) {
          let form = _.cloneDeep(this.addForm)
          form.goods_cat = form.goods_cat.join(',')
          this.manyTabData.forEach(v => {
            let newInfo = {
              attr_id: v.attr_id,
              attr_value: v.attr_vals.join(' ')
            }
            this.addForm.attrs.push(newInfo)
          })
          this.onlyTabData.forEach(v => {
            let newInfo = { attr_id: v.attr_id, attr_value: v.attr_vals }
            this.addForm.attrs.push(newInfo)
          })
          form.attrs=this.addForm.attrs
          console.log(form)
          let res = await this.$http.post(`goods`, form)
          if (res.meta.status === 201) {
            message('success', '添加商品成功!')
            this.$router.push("/goods")
          } else {
            message('error', '添加商品失败!')
            return false
          }
        } else {
          message('error', '请填写必要的表单项!')
          return false
        }
      })
    }
  },
  computed: {
    cateId() {
      if (this.addForm.goods_cat.length === 3) {
        return this.addForm.goods_cat[this.addForm.goods_cat.length - 1]
      } else {
        return null
      }
    }
  },
  mounted() {
    this.getCateList()
  }
}
</script>

<style scoped lang="less">
.el-checkbox {
  margin: 0 15px 0 0 !important;
}
.previewImg {
  width: 100%;
}
</style>
